Oil-well swab



Oct. l

W. J. MILLER oIL WELL swAB Patented Oct. 12, 19,26.Y Y

VUNITE sr vWILLIAM I. MILLER, oFIroUsroiv, TEXAS;

' npplicaubntlea october 23, 1925. seriaruo. 64,411.

. This invention relates to a well swab,"th'e Y general object of ltheinvention .being .to

increase the efliciency of the device by lrotatably connecting the'swabtothev other parts so that the swab will not rotate inthe casvalve meansfor holding the oil in the pipe'r and above the .swab on the .exteriorofthe pipe where it is visiblevand. easily accessible.

A further object of the invention is tov provide meansv for jarringv theswab to loosen the same if it should become stuck in the well. c g l f Astill further objectief th-e invention is to ormthe valve means thatthey willl be selfgrinding as the device is ybeing operated.

y This invention v*also consists in certain other features of'construction and 1n the combination and arrangement of the severalparts, to be hereinafter fully described, illustrated in theaccompanying drawings and specifically' pointed out in the appendedclaim. y' f In describing my invention in detail, reference will behad`v` to the; accompanying .drawings wherein like ycharacters denotelike or corresponding parts throughout the several views, and which:-V l

; Figure 1 is an elevation of the device.

Figure 2 is a longitudinal sectional view, showing the'parts in adifferent position.

ure v1. Y

Figures r4, 5 and 6 are parts of the device. .y

Figure 7 shows the swab in lits lowest position. Y

In theseviews, 1 indicates a long length pipe which isconnected with thepipel 2 by the coupling 3, the pipe 1 'being of greater.

diameter than the pipe 2- and the coupling being made tovproperlyvconnect the two" pipes together. The pipe 1 is kprovided withperforations 4 for the outlet of oil and he pipe 2 is provided withperforations 5k ior the inlet of oil.l A rope socket 6 is connected withthe upper end ovthe pipe 1` forreceiving the' cable 7 and the lowerendof pipe 2 is closed by a plug 8.

Figure 3 is a section on line 3--3 of Figa views of l various Thev swab"l9,*whi'chi-is preferably formed' l ,itis

of rubber vor the like,'is carried by a tube 10 vwhich is slidablymounted on a part ot the lpipe-2. L.The swab is held in place onAthetube'by the uppery and lower nuts 11 threaded tothe tube andthewashers 12 which are placed between the nuts and the Y ends -of'theswab. A jar member 13 .is

4connectedl withv therupper endfoi'y the tube y 10 and cooperates withajar`part14ffo-rmed on'thelower end" of the coupling 3. A

valve part ..15 is connected with the lower endet-the tube 10 and'cooperates witha valve part 16 connectedv with the lower end of. thepipe l2,y below the perforationsfin saidjp1pe. The part 15 has an`Vannular groove 17'therein for receiving an annular Y.

iange 18, onthe part 16.

v'From thev `foregoing, it will be seen that theswab is swiveled on'thepipes so that said pipes can havev turning movement without thel 4swabturning and thusthere is 'no i danger of-.thfe parts becomingdisconnected by theftwisting movement of the pipes with the swabremaining stationary as there'isv when the swab is firmlyconnectedA withthe pipes. As the device descends, the part 14 i will press upon thepartv 13 and thus force the swab to Vmove downwardly with the rest ofthe device and in this position of the parts, -thevalve parts will beseparated and ther pe-rforations 5 will be exposed so that when thedevice enters the liquid inthe well, said liquid will pass through the.perfora- A'tions and iow upwardly through the pipe 2 intofthe pipe 1`and will escape through the peiforations 4 into the well casingabovethe y swab. 0n the upwardstroke, ythe swab remains stationaryr asthe parts pass upwardly until the valve part 16 strikes the part 15,

when the swab is moved upwardly with the f other parts. The engagementof the two valve parts prevents the liquid from returning to the well asthe perforations 5 are covered by the tube 10 and any leakage frombetween the pipe and tube is stopped bythe valve part. -As the device isbeing reciprocated by the cable, thefsaid cable has a ten-4 dency toturn the parts but this turning movement is not transmitted to the swab,as

before explained, but the movement of the valve part 16 in .relation tothe part 15 makes .thevalve parts self-grinding, as the flange 18 turnsin thefgroove 17. The jar parts 113 and 14 enables the swab tobe'loosenedif vit should become stuck in the well by letting the part 14fall upon the part 13 to set up a jarring action. The valve parts arevisible so that they are easily vaccessible and the perforatedrpart ofpipe 2 is below the swab on the downward stroke of the device so thatthe liquid can enter the device through said perforations land afterflowing through the portion of the pipe which passes through the swab7will escape from the perforated part of the pipe l above the swab.

lt is thought 'from the foregoing' description that the aC Jantages andnovel features of my invention will be readily apparent.

I desire it to be understood that. l may :nahe chanojes in theconstruction and in the combination and arrangement of the severalparts, provided that sueh changes fall within tl e scope of the appendedclaim.

lllhat l claim is;-l

pump plunger of the character described comprising` a. hollow ste-1nhaving inlet openings adjacent the lower end thereof, and outletopenings adjacent the upper end thereoa sleeve loosely mounted on saidstein and capable of rotation with relation thereto, a swab fixed onsaidsleeve, said sleeve projecting` above and below the swaband-exterioiily threaded, a valve member threaded ou the lower end ofthe sleeve and l formed fwith an annular groove, and a cooperatine`valve member carried bv the lower end of the stein for movement towardand away from the first mentioned valve ineinber, and incliulingv anannular .flange adapted to be seated in said groove when the valve isclosed for the purpose specifiedV In testimony whereof my signature.

VLLAM J. MILLER.

